Strip yield modelling of fatigue crack under variable amplitude loading

被引：2

作者：

Singh, Konjengbam Darunkumar ^{[1
]}

Xu, Yigeng ^{[2
]}

Sinclair, Ian ^{[3
]}

机构：

[1] Indian Inst Technol Guwahati, Dept Civil Engn, Gauhati, India

[2] Univ Hertfordshire, Sch Aerosp Automot & Design Engn, Hatfield AL10 9AB, Herts, England

[3] Univ Southampton, Mat Res Grp, Sch Engn Sci, Southampton, Hants, England

来源：

JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY | 2011年 / 25卷 / 12期

基金：

英国工程与自然科学研究理事会;

关键词：

Fatigue; Variable amplitude loading; Strip yield modelling; Finite element modelling; ELASTIC-PLASTIC ANALYSIS; FINITE-ELEMENT-ANALYSIS; TENSILE OVERLOADS; CONSTANT AMPLITUDE; SINGLE OVERLOADS; CLOSURE; GROWTH; PROPAGATION; ROUGHNESS; BEHAVIOR;

D O I：

10.1007/s12206-011-0906-x

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

The results from 'strip yield' approach of the FASTRAN type models of plasticity induced crack closure effects of fatigue cracks subjected to variable amplitude loadings are presented. The strip yield results are compared with authors' finite element (FE) and experimental results. It has been observed that the strip yield model is seen to be fundamentally limited by choice of alpha (constraint factor) and corresponding to treat baseline closure effects. Double overload closure behavior is functionally similar for both strip yield and FE models. Under multiple overloads, an important functional difference is seen between FE and strip yield models. This has been linked to the absence of in-plane constraint in the strip yield model, which is seen to have a distinct decreasing influence on on-going closure effects.

引用

页码：3025 / 3036

页数：12

共 56 条

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